Method of making flashed glass



(No Model.)

F. L NOY. METHOD OF MA G FLASHED GLASS. No. 451,618.- Patented May5,1891.

I UNITED STATES PATENT OFFICE.

" nRANoois-LANNoY, or TIFFIN, OHIO] METHOD MAKING FLASHED GLASS.

SPECIFICATION forming par of Letters Patent No. 451,618, dated May 5',1891.

Application filed December 26, 1890.

To all whom it may concern.-

Be it known that LFaAncois LANNOY, a citizen'of the United States, and aresident of Tiffin, county of Seneca, and State of Ohio, have inventedcertain new and useful Improvements in Methods of Making Flashed Glass,of which the following is a specification, the principle of theinvention being herein explained and the best mode in which I havecontemplated applying that principle so as to distinguish it from otherinventions. The object of my invention is to produce variegated fiashedglass -that is, flashed glass having one of its surfaces composed of twoor more colors instead of one solid color, as heretofore.

Heretofore flashed glass has been made as follows: There is gathered onthe end of the pontil or blow-tube a small quantity of melted glass ormetal, as it is technically called, of the desired color, and there isthen gathered over and around this colored glass a quantity of plainglass sufflcient to make a cylinder of the desired size. The combinedmass thus formed is then blown in the usual way, and the result is acylinder composed of two layers, usually of uniform thickness, one layerbeing formed of plain glass and the other of colored glass of a uniformor solid color. The cylinder is then split longitudinally and flattenedin the usual way. By my invention I am enabled to produceacylinder ofglass consisting of two layers, one of which layers shall be formed ofplain or other glass, as heretofore described, and the other layer shallbe made up of two or more stripes of colored glass of any desired widthand color, different shades and colors being as numerous as may benecessary to produce any desired artistic efiect. If the colored layerof the finished sheet of glass is to be made up of, say, six stripes,each of a different color, I would proceed as follows: First. Six piecesof glass of the desired shade of color should be formed ofsphero-sectoral shape, so that when their edges are placed in contiguitywith ea ch other they would fit snugly and compactly together, and thecombined pieces would form a figure of substantially bulbous orspheroidal shape, preferably having an open mouth. Second. Thisspheroidal bulb or cup would then be Serial No. 375,806. (No specimens.)

mouth of the bulb, and the pontil thus prepared should be thrust intosaid mouth or opening. This would cause the sections of the bulb toadhere together and to the end of the pontil. If required, the massmight be slightly blown to cause better and more perfect adhesion totake place. Fourth. Around the bulb so formed is now gathered a quantityof glass sufficient to form a cylinder of the desired size, and theblower proceeds in the usual manner to elongate the entire mass intoacylinder. The prepared sections of the colored glass will thus becaused to form stripes, which may be varied in width and may traversethe cylinder either longitudinally or spirally at the will of theblower, and the artistic effect of the flashed glass thus produced canbe varied almost indefinitely by the width of the stripes, the varyingshades and colors of the same, and the varied shapes, bends, twists, orcurves that the skill of the blower may produce in the stripes.

It should be understood that I by no means limit myself to thesphero-sectoral shape of the different members that make up the initialbulb, as any other shape might be used, as desired, provided only thatthe edges of the different members are so formed as to be capable ofadhering to each other and making one common bulb that might afterwardbe treated and finished by blowing. Neither do I limit myself to placingthe combined members in a mold previous to inserting the pontil, as anyapparatus or process causing the separate members to adhere to eachother would be as effectual.

Referring to the drawings, Figure l is a perspective view of asphero-sectoral-shaped piece of glass of any solid color. Fig. 2 is aperspective view of a bulbous or spheroidal shaped figure made up ofseveral of the sectoral-shaped figures shown in Fig. 1, having theiredges joined; and Fig. 3 is a sectional View of the glass bulb ready forblowing.

The letter A represents one of the spherosectoral pieces or members thatgo to make up the bulb B, from which a cylinder may be blown.

The foregoing description and accompanying drawings set forth in detailone method of carrying out my invention. Change may be made therein,provided the principles of operation respectively recited in thefollowing claims are employed.

I therefore particularly point out and distinctly claim as myinvention- 1. A method of making flashed glass, consisting of joiningand causing to adhere the edges of two pieces of glass of differentshades, then coating the combined piece thus made with molten glass, andblowing the mass,substantially as set forth.

2. A method of making variegated flashed glass, consisting of unitingthe edges of two pieces of glass of difierent colors so as to form abulb, inserting the blow-tube in the opening in said bulb, then coatingthe bulb with glass of a solid color, and then blowing the coated bulb,substantially as set forth.

3. A method of making variegated flashed glass, consisting of joiningthe edges of two or more pieces of glass of dilferent colors, thecombined pieces substantially of spheroidal form, placing the spheroidin a mold and holding the pieces composing it together and slightlyheating them, blowing the spheroid and causing the edges to unite,coating the mass thus formed with plain glass, and blowing the same,substantially as set forth.

4:. In amethod of making variegated flashed glass, the following steps:first, shaping pieces of glass of different colors of substantiallysphero-sectoral form, so that when their edges are brought into contactthey form a bulb with an open mouth, )lacing the bulb in a mold andslightly heating it, insertinga tube provided with metal in the openmouth of said bulb and blowing sufliciently to attach the metal to thebulb and cause the contiguous edges of the sectoral pieces to adhere,then withdrawing the bulb from the mold, coating it with plain glass,and blowing the combined mass, substantially as set forth.

In testimony that I claim the foregoing to be myinvention I havehereunto set my hand this 13th day of December, A. D. 1890.

FRANCOIS LANNOY. Witnesses:

'1. L. l\[AGERS, J. E. lllAGERS.

